/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassEntityManager.h
Fetches the archetype for a given Entity. If Entity is not valid it will still return a handle, just with an invalid archetype
[FMassArchetypeHandle](API\Plugins\MassEntity\FMassArchetypeHandle) GetArchetypeForEntity ( [FMassEntityHandle](API\Plugins\MassEntity\FMassEntityHandle) Entity ) const